Kai Fu Han

Chapter 556
On May [-]th, after the Qiantang River came out of the sea.

The sails that covered the sky and the sun blocked the entire outlet to the sea.

Ye Chuan stood on the bow of the Taishan and looked at the hundreds of Nanzhao warships on the Qiantang River in the mouth of the sea, marveling at them.

"This Southern Zhao is present, and dares to line up with our Xinghan League warships at sea."

"We are here to tear down the door this time. It is normal for others to guard it." Zhao Liang retorted.

The army of the Xinghan League can be said to be invincible on land, and it is already very powerful.

However, the navy of the Xinghan League was truly "lonely and seeking defeat" on the water.

From the East China Sea to the Bohai Sea, and then to the Japanese Sea.

It has always been that less wins more, and the gap between less and more is often very large.

Previously, Ye Chuan led the Second Fleet to block the entrance of the Qiantang River. Nan Zhaolu sent more than 200 warships one after another, and not even a single ship of the Second Fleet was sunk.

At that time, the reputation of Xinghan League warships had completely spread in Jiangnan.

Now that the Xinghan League has sent more than 200 ships south (including [-] cargo ships), does Nan Zhao have the courage?
"I didn't teach them enough lessons last time, how dare you do it this time?" Ye Chuan said
Gao Yuan also felt a little strange after hearing Ye Chuan's words, and asked Zhao Nan, who was just on the merchant ship: "Did Nan Zhao develop any secret weapons?"

Nan Zhao must be able to organize so many warships to line up for confrontation. He must have something to rely on. Perhaps he has developed some weapons that can restrain the warships of the Xinghan League. As Zhao Nan is the general manager of the Xinghan League in Jiangnan, Gao Yuan feels that he should know Some.

"I'm not very clear either. Since Wang Boyan was assassinated by Nan Zhao at the end of March, our Xinghan Alliance's high-level eyes and ears in the Nan Zhao court have all been cleared. Now it's difficult to investigate some of the more critical positions without alerting the enemy."

There are more and more sequelae of Zhao Nan's organization to assassinate the Southern Zhao Emperor. Not only has the Southern Zhao court's vigilance and precautions against the Xinghan Alliance reached its peak, but Li Gang and Xu Han, who had a good relationship before and had frequent contact, have also lost contact.

It is said that the two have returned to the center of power of the Southern Zhao court once again, and are using their previous experience in the Xinghan League to carry out reforms in Southern Zhao.

"Don't worry about alerting others. This time we went south to cause trouble. You can feel free to explore. If you don't have enough manpower, let me know." Gao Yuan said.

Zhao Nan used to be Gao Yuan's close subordinate, and the relationship between the two was very close.

"That's just right. Lend me twenty soldiers, and I promise to explore all the orifices inside within one day."

It seems that Zhao Nan already had a goal before, but he didn't take any action just to avoid alerting others.

"no problem."

Twenty soldiers who were good at military intelligence were quickly organized and followed Zhao Nan ashore in a small boat.

The naval battle did not break out that day, as both sides had concerns, and finally stopped before dark. Gao Yuan organized the fleet to retreat ten miles east and anchored for repairs.

Nan Zhao's fleet continued to guard the Qiantang River estuary. With the convenient supply support on the shore, they could last for a long time.

……

Zhao Nan's efficiency was very high, and the next day, on May [-]th, he found out the reason.

"We spent a day catching more than 100 tongues, including Nan Zhao officials, craftsmen, soldiers, and businessmen who provided supplies to the government. Now it is basically confirmed that Nan Zhao has indeed developed a new type of weapon. They believe that We can restrain us with this weapon." "They think," which means Zhao Nan doesn't think so.

"What weapon?"

"Rotary stone-discharging cart!" Zhao Nan replied.

"Invented by Ma Jun? The lost 'rotating stone car'?" Zhao Liang said in surprise from the side.

"Yes, according to an official's report, without the basic teaching materials of our Xinghan League, they would not be able to develop this weapon." Zhao Nan said.

Having said this, can one still blame Liu Xinqi for sending knowledge to the enemy?
"Don't talk about these, let's talk about the performance of this weapon." Gao Yuan asked

"A 'Rotary Stone Cart' has 20-yuan stones on its wheels. The firing speed is very fast. It can fire all the 20-yuan stones in less than one breath, and the shooting distance reaches two hundred steps." Zhao Nan replied

It is recorded in ancient books that the "rotating stone car" is driven by a large wooden wheel that rotates vertically around an axis. Dozens of large stones are tied with ropes to the edge of the wheel, and then the wheel is driven by machinery to rotate rapidly. The hanging stone will also rotate together. When the rotation speed is very high, the rope fastening the stone will be quickly cut off, and the stones will be launched continuously to attack the enemy's tower, leaving the enemy with no time to defend.

Students graduating from junior high schools in later generations will understand that the principle of this rotary stone-making cart is reasonable, but it does not mean that it can be built.

First, where does the power to turn the big wooden wheel come from?

This is not the time for Ma Jun's experiment, where dozens of bricks are tied and can be turned by human power.

In actual combat, it takes a lot of strength to turn dozens of large stones quickly.

Only rapid rotation can generate a relatively large centrifugal force, allowing the stone to fly far enough when the connecting rope is cut.

In addition to power, there is also the rotation of the wooden wheel. What kind of structure can support the wooden wheel to rotate at high speed under high load conditions?
There is also the problem of aiming. The accuracy of the stone flying out is determined by the timing of cutting the rope. How to grasp this timing?

The current knowledge reserves of several people participating in the discussion have exceeded that of future high school students, so one can imagine how difficult it would be for this kind of weapon to achieve such lethality.

"So powerful? How did they do it?" Gao Yuan asked again.

"All these have been asked clearly. I also sent people to spy on the workshop where the hair stone car is made, and confirmed that what I said is true."

Then Zhao Nan gave a detailed introduction to this weapon.

The large wooden wheel of the wheel-turning stone cart is connected to the base through bearings, so that the base can support the weight and high speed of the wooden wheel.

As for the power to rotate the wooden wheel, it comes from the gear set. Four people turn the turntable on the side of the stone car. The power is transmitted to the wooden wheel through the connecting rod and the gear set, so that the wooden wheel can rotate at high speed and exert huge centrifugal force on the stones.

As for the aiming problem, it is solved very cleverly. There are several knife positions on the outside of the wooden wheel, which can fix the blade. The sharp blade is fixed on the knife position. If you push forward hard, you can explore the path of the connecting rope. among.The high-speed rotating connecting rope hits the blade, breaks, and the stone flies out.

Due to the limitation of the knife position, the position where the connecting rope breaks is the same, and the position where the twenty stones are launched will not be much different.

Each knife setting position has been tested in advance, and the shooting range is marked. Different knife setting positions represent the angle at which the stone flies out and the distance that can be flew.

This solves the aiming problem.

(End of this chapter)